University of Illinois Urbana-Champaign

Low And High-resolution Laser-induced Fluorescence (lif) Of Jet-cooled Ndo

Schmitz, Joel R.

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WC07_1.pptx

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Title
Low And High-resolution Laser-induced Fluorescence (lif) Of Jet-cooled Ndo
Author(s)
Schmitz, Joel R.
Contributor(s)
  • Heaven, Michael
  • Steimle, Timothy
  • Rodriguez, Arianna
Issue Date
2022-06-22
Keyword(s)
Electronic structure, potential energy surfaces
Abstract
The chemi-ionization reactions of atomic lanthanides M + O $\rightarrow$ MO + e$^{-}$ are currently being investigated as a method to artificially increase the ion density in the ionosphere for uniform radio wave propagation. Recent experiments involving the release of atomic neodymium (Nd) into the upper atmosphere have resulted in the production of a cloud with green emission[1]. Based on the cloud emission, it is believed that NdO was the primary product, but spectroscopic characterization of NdO is needed to properly identify the emitting species. While NdO is well characterized above 590 nm, little spectroscopic data exits at emission wavelengths below 590 nm[2,3]. In this work, jet-cooled NdO was produced and low- and high-resolution laser-induced fluorescence (LIF) and dispersed laser-induced fluorescence (DLIF) techniques were used to characterize the electronic structure of NdO from 15,500-21,000 \wn. Congested DLIF spectra allowed vibrational characterization of the ground X4 state as well as five low-lying states for the first time. By employing high-resolution LIF, the hyperfine structure of the ground X4 state was obtained. Data and analysis of the ground and low-lying states of NdO will be presented. \\ [1] Ard, S.G. et al. J. Chem. Phys.2015, 143, 204303. [2] Kaledin, L.A. et al. Acta Physica Hungarica 1983, 54, 189-212. [3] Linton, C. et al. J. Mol. Spec. 2004, 225, 132-144. [4] VanGundy, R.A. et al. J. Chem. Phys. 2019, 114302.
Publisher
International Symposium on Molecular Spectroscopy
Type of Resource
text
Genre of Resource
Conference Paper / Presentation
Language
eng
Handle URL
https://hdl.handle.net/2142/116921
DOI
https://doi.org/10.15278/isms.2022.WC07
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Abstracts & Presentations - 2022 International Symposium on Molecular Spectroscopy PRIMARY